MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics identified it as a link farm, with many URLs pointing to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are consistent with spearphishing attachments used to redirect victims to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://nomylo.ru/uplcv?utm_term=manual+de+documentos+cuestionados+pdf PDF link annotation
- https://birutelorasin.com/contents/files/72539392620.pdfIn PDF document text
- http://swissies.lt/ckfinder/userfiles/files/22070963310.pdfIn PDF document text
- http://sandlnae.com/data/editor/file/daserukujitodinukoj.pdfIn PDF document text
- http://xn--aknmedical-yub.com/uploads/file/20327005707.pdfIn PDF document text
- https://familienbilstrup.dk/ckfinder/userfiles/files/27392324418.pdfIn PDF document text
- http://fedime.org/imagenes/82556385336.pdfIn PDF document text
- http://geojeoceanhotel.com/userfiles/file/20210914150420.pdfIn PDF document text
- http://coeb.eu/userfiles/files/49569090073.pdfIn PDF document text
- http://ildungrice.com/fileupload/fckeditor/file/pusidivabeguloxufosupaxim.pdfIn PDF document text
- https://nhahangbienhaitien.com/uploads/files/muramarididabefaxapuve.pdfIn PDF document text
- http://www.impactit.in/ckfinder/userfiles/files/86161007081.pdfIn PDF document text
- https://highlander-inn.com/assets/userfiles/files/51270363734.pdfIn PDF document text
- http://amindoost.ir/images/upload/files/90387268639.pdfIn PDF document text
- https://aspit.ro/imagini_ws/64398739745.pdfIn PDF document text
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613f2fb37824e---zanozetofepalusevifo.pdfIn PDF document text
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613887dcd82b6---31972292690.pdfIn PDF document text
- http://cmtdental.com/upload/ckimg/files/virulerazizalekigasawod.pdfIn PDF document text
- https://textosl.com/upload/editor/file/dokeriwubetapesolema.pdfIn PDF document text
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16137577f5b52f---mumumesid.pdfIn PDF document text
- https://buddhaart.in/userfiles/file/91157487022.pdfIn PDF document text
- http://tingchucontrol.com/Uploadfiles/files/20323460125.pdfIn PDF document text
- http://leebyunghun.kr/new/upload/board/files/dukixijewobutegasigu.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/6f35c75e35bfa6ba2043142dd9a0f8d1/13888927621.pdfIn PDF document text
- http://pereplanirovkaoblast.ru/pict/file/xezanofuvuguzujarigelik.pdfIn PDF document text
- http://alhouti.com/userfiles/file/48276595243.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e902.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE902 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010114.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10114 | 20628 bytes |
SHA-256: 6d78eaf46474ae3180d9ae35db07be0da8d42033f4fd7db76f69775154872909 |
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font_02_sfnt_off000135f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135F9 | 10772 bytes |
SHA-256: 867693e11559736bbab20e735cf325b44329ca004f1b8409f0594efaef0d93d9 |
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